A group of students is trying.to determine which detergent will best remove an oil stain. They stain five separate cloths with oil and.then wash each of.the cloths in a deficient detergent. They repeat each test two more times. Which step should be included in their investigation plan?

Answers

Answer 1

Answer: Place each oil stain on separate, but identical, pieces of cloth.

Answer 2

The group of students should have stained separate but identical pieces of cloth.

There are different factors that influence how easily a stain will come out of a material such as:

the type of material the detergent used the temperature of the water

Assuming the temperature is held constant and the type of detergent is being tested, the only thing other thing to control is the type of material.

The students used separate cloths instead of identical ones which meant that a significant variable was not controlled.

In conclusion, the students should use separate but identical pieces of cloth so that the type of material would not impart their experiment.

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A Group Of Students Is Trying.to Determine Which Detergent Will Best Remove An Oil Stain. They Stain

Related Questions

How do scientists use the fossil records to create a history of the earth?

Answers

Answer:

The fossil record tells the story of the past and shows the evolution of forms over million of years.

4,276 round to nearest thousand

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4,000

Because 2 rounded it closer to 4

why do people alter their environment

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To best accomodate their needs.

A lot of people do this thinking it will cause no harm, or not caring, but it does! They simply do it fulfill their needs in the way they think is best.

Based on your understanding of how producers make food, make a prediction about the relationship between sunlight and carbon dioxide uptake by a plant.

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Answer:

photosynthesis

Explanation:

evaluate 207.3×0.04

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the correct answer is 8.292

1 Manuel exerts a force of 10 N to push a desk to the right at the same time Lynn exerts a force of 15 N to push the desk to the left, the desk
will move to the left
True
False

Answers

Answer:

true cause lynn exerts more force than manuel

Explanation:

What stores genetic information and also transfers the information?

Answers

Answer:

Deoxyribonucleic acid

Explanation:

DNA is short for Deoxyrybonucleic acid

15. The process that can move molecules into the cell with the aid of a protein is
A. endocytosis
B. facilitated diffusion
C. passive transport
D. photosynthesis
What’s the answer?

Answers

B) facilitated diffusion

The hand is located at what end of the forearm
Interior
Distal
Proximal
Medial

Answers

I’m pretty sure it’s distal since it’s away from the point of attachment

The hand is located at the distal end of the forearm. The correct choice is "distal".

Distal refers to a position that is farther away from the point of origin or attachment.

In the context of the forearm, the hand is located distally because it is farther away from the point of attachment at the elbow.

The forearm is the portion of the upper limb between the elbow and the wrist.

It consists of two long bones called the radius and ulna.

The hand is connected to the forearm at the wrist joint.

In other words, the hand is at the end of the forearm that is farthest from the body.

Thus, the correct choice is "Distal."

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help please
answer these 3 questions

Answers

Answer:

1)D.Sucrose

2)B. Dna and Rna

3) A. Enzymes shape will be different

Explanation:

I really hope this helps

1-Is A 2-Is B and 3-is A

how do bacteria become resistant to antibiotics over time?

Answers

By evolving. Over time bacteria will become stronger to combat the antibiotics. Hope this helps

Amoeba Sisters-Carbon and Nitrogen Cycles

Why do some organism need nitrogen?

A. They need nitrogen to breathe.

B. Organisms need nitrogen to sleep.

C. Organisms depend on nitrogen for food as it is attainable through plants.
.

D. They need nitrogen to run.

Answers

Answer:c

Explanation by my calenlation the answer is C as i went over the Video Three times.its C

Explain how scientific theories differ from scientific laws.

Answers

In general, a scientific law is the description of an observed phenomenon. It doesn't explain why the phenomenon exists or what causes it. The explanation of a phenomenon is called a scientific theory. It is a misconception that theories turn into laws with enough research

What is energy and how does it change from one form to another? (Give an example)

Answers

Answer:

Energy is a property of matter. example what we eat has energy. Apples have energy.

Explanation:

BRAINLIEST!! Are Zebras mammals?

Answers

Answer:

yehee boi

Explanation:

it is a warm blooded vertebrate

Answer:

A zebra is a mammal. Zebras share the genus with horses. With their distinctive black-and-white stripes, zebras are among the most recognizable mammals.

Most fad diets focus on restricting certain types of food and nutrients. What do you think would happen if someone ate an extremely low-protein diet without the approval of a doctor? What side effects might the person experience?

Answers

Answer:

Eating a diet of low levels of protein could leave you to development a condition called edema, which causes swelling in your legs and feet from the buildup of fluids. Protein plays an essential role in maintaining salt and water inside your blood vessels and ensuring fluid does it make its way into the tissues. Hajima can cause stiffness, difficulty walking, increasingly painful swelling.

Explanation:

Answer:

Here’s one possible answer:

Protein builds and repairs body tissues. So, a person who eats a low-protein diet might experience symptoms such as slow wound healing. This person might also start losing muscle mass because the body uses skeletal muscle to make protein when needed.

Explanation:

what was the independent variable in this experiment

Answers

Explanation: the actual thing that you are testing and changing in your experament can also be called the manipulated variable hope this helps

Decide which two organisms to compare in your paper

Answers

Answer:

eukaryotes and prokaryotes

Explanation:

both are organisms that are comparable

True a False/ a theory is a scientific idea that has been proven to be true.

Answers

Answer:

No,it has to be proven true its not already true

Explanation:

It has to be proven true,it can't be true becuase someone said it was without any proof.

a student failed a test tube to the top with water. at the top of the test tube the water formed a low Dome. he States this occurs because of cohesion. Do you agree with his answer? explain your answer.

Answers

Answer:

Yes

Explanation:

Cohesion lets water stay afloat even once it reaches the highest point.

Do an experiment using a penny and droplets of water

PLS HELP ME ANSWER THIS AS FAST AS POSSIBLE!!!!!

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Answer:

1st

Explanation:

1st answer im pretty sure, cuz cells are pretty simple, and in the end its the organism which makes up all of it

3 uses

of surface tension

Answers

Answer:

»Some of the uses of surface tension :-

1) Surface tension allows insects (e.g. water striders), usually denser than water, to float and slide on a water surface.

2) Surface tension is an important factor in the phenomenon of capillarity.

3) Surface tension has the dimension of force per unit length, or of energy per unit area.

tomato onion pcece of meat balace and basin

Which of these statements explains a key difference between unicellular and multicellular organisms?

A)Only multicellular organisms can photosynthesize
B)The cells of unicellular organisms are much smaller than the cells of multicellular organisms.
C)Multicellular organisms have cell walls that provide structure and support for their cells, but unicellular organisms do not.
D)Multicellular organisms have membrane bound organelles that carry out specific functions.

Answers

Answer:

Multicellular organisms have cells, not just organelles, that carry out specific functions

Explanation:

How could early life have changed the Earth?

Answers

Life on Earth has also changed tremendously. At first, the Earth was not even able to support life. There was no oxygen in the atmosphere, and Earth's surface was extremely hot. Slowly, over millions of years, the Earth changed so that plants and animals could begin to grow.

How is a snail dangerous to cattle?

Answers

Trematode is the infection in farm animal and their culprit is snail’ this damages their liver and this can kill them.

Cell division by meiosis of a parent cell with 23 pairs of chromosomes will result in...
A) 2 cells, each with 23 single chromosomes.
B) 4 cells, each with 23 single chromosomes.

Answers

Answer:

option A is the right answer

hope this helped you

please mark as the brainliest (ㆁωㆁ)

Meiosis is a type of cell division that occurs in cells and this division results in a reduction in the number of parent cells by half.

A parent cell with 23 pairs of chromosomes (46 chromosomes) undergoing meiosis will result in the production of 4 cells each with 23 single chromosomes.

In meiosis, a beginning cell with 23 pairs of chromosomes (after duplication) will go through the first division separating all homologous chromosomes and giving rise to two cells with 23 chromosomes each with its own two sister chromatids.

During the second division, each of the two daughter cells produced divides and the chromosomes separate at the centromeres, with each chromatid moving to opposite pole, so four daughter cells is produced and contains 23 single chromatids/chromosomes.

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Give three reason for the upward
movement of water in plants

Answers

Answer:

Diffusion, transpiration and capillary action are the three factors that

influence the upward movement of water in plants . Explanation: Diffusion is the

process where the water enters the root system and generates pressure, gushing

water flow along the xylem.

Please mark as brainliest

how is the hammer structure related to its function

Answers

Answer:

hope it helps you..

Explanation:

Structure to Function Relationship:

The length of the handle allows for a swing that increases the speed of the head of the hammer. The head is composed of hard metal. When the head hits the nail, the metal transmits the force of the swinging hammer into the nail, driving it into the wood .

Can someone please helper emergency

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Answer: C

Explanation:

Summarize how scientists use predictions in scientific investigations.

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They use hypotheses to guess a result based on what they already know. Observations are used to record the results of an experiment. Predictions are used to have an expected outcome of a test, thinking the hypothesis is correct. Experiments are used to test the hypothesis.

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